# -*- coding = utf-8 -*-
# @TIME:2024/9/29 10:05
# @Author:月的第一话
# @File:dome.py
# @Software:PyCharm
a='world'
b="world"
c='''world'''
print(a)
print(b)
print(c)
print('123---{0}'.format(4))
print(f'123--{a}')

for i in range(0,101,2):
    print("==========开始下载==========")
    if i==100:
        print("下载完成")
    else:
        print(f'{i}%','[',"*"*(i//2),"."*((100-i)//2))
        str4="*"*(i//2)+"."*((100-i)//2)
        print(f'{i}%[{str4}]')